<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <title>Hello World</title>
    <style>
        body {
            background: #e88787;
            color: #0f0;
            display: flex;
            align-items: center;
            justify-content: center;
            height: 100vh;
            margin: 0;
            font-family: monospace;
        }
    </style>
</head>
<body>
    <h1>Hello World</h1>
</body>
</html>